FSE

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Author's Notes: This is a work of fiction. Don't try this at home (sweet Mother of Pearl, don't try this at home). It starts quite extreme, and then gets more extreme. There's fisting, watersports, bondage, bestiality. None of the characters are harmed, everything is consenting, a good time was had by all. If this doesn't sound like something you want to be near, go read Hairy Potter instead. Otherwise, ten points to House Slytherin if you make it to the end.

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Chapter 1: Nero

It was mesmerizing - the way his finger rubbed around the Great Dane's pucker. Around, around, every so often pressing harder to make the dog clench slightly. Lubricant made the pucker shiny and slick. Lower down two heavy balls hung in a sack of polished obsidian. The finger (and the Great Dane dog) belonged to a man called Breck. He looked the way a man named 'Breck' should- tall, wide, weathered like a rock face. He was a man who had worked his farm for 40 years, and had the leather skin to prove it. His clothes were as old and weathered as the man - patched overalls, scuffed boots, and a wide-brimmed, ragged-looking hat.

In contrast the Great Dane dog looked every part as regal as a statue of his name-sake, 'Nero'. He was a magnificent creature of muscle, flowing lines, and steel-blue fur that was so glossy it could have been buffed metal. He weighed as much as his owner but Nero was a fine artwork where Breck was a rough-hewn labourer.

The man hypnotized by the finger was an Anthro Collie dog. Klein was smaller than the farmer and lightly built. His features were canine, although he walked on two hind legs, had hands instead of front paws, and could speak as well as anyone. The world had moved on from being surprised at seeing a canine face talking in perfect English. His gold and white pelt was short - he was a smooth-coat, not a rough. A fringe of darker fur ringed his face and pointed ears. Klein was always moving, gesturing, twitching or casting around. It could have been nervousness, or anticipation, or just a Collie's natural disposition.

"You sure he's okay with this?" The anthro Collie needed reassurances.

"Yep. Reckon 'e likes it. Brings his-self in 'ere, proud as anything." The big man affectionately patted the rump of the Dane while he kept swirling his finger around the dog's pucker in that hypnotic manner. "Prolly be waggin' his tail if it weren't tied up."

"But why the restraints?" Klein nervously gestured at the complicated frame surrounding the Great Dane and to which the dog's legs had been strapped.

"That's fer 'is own pertection. You'll see later." Breck dismissed the Collie's concerns.

Nero's legs were strapped to the four corners of a frame, keeping him stationary but with his legs slightly spread. The dog's chest was supported by a padded upright at the front of the frame. A studded collar around the dog's neck secured to the upright kept his head in place and the dog's tail was pulled up and secured to the top of the collar. Klein had heard of breeding frames for restraining unwilling or aggressive bitches during a mating. He'd never seen a male dog in a mating frame before. This frame looked somewhat more complicated, however. There was an additional level of frame above the dog - heavy steel cross-beams whose purpose seemed unclear.

"You kin start 'im up." The large man stepped back and gestured for the smaller anthro to take his place. "Just go slow, go careful. I love my boy an' I don't want you to hurt 'im."

"Right... Sure... Okay." Klein moved closer to the Great Dane's rear end. He lathered his fingers with the slimy lubricant. "I've never really done this before - not with a classic non-anthro canine anyway. I mean, I've never done anything sexual with a dog at all." The anthro collie's voice quivered with nervousness. "I really appreciate you letting me play with your boy."

"Git on with it then. Nero'll get pissed if you make 'im wait all day." The big man encouraged the anthro. "Start with one finger. When Nero's fine with that, use two fingers. Then three. An' treat him like a lover - you're pleasuring him, not yourself."

Klein stared at the lubricated orifice, "I, um... Is he clean? You know. I don't really like..."

"Yep. Cleaned 'im out thorough before you got here." Breck inclined his head toward a complicated arrangement of pipes and hoses in the corner. Near a drain in the floor an array of nozzles and rubber tubes were draped over faucets. The longest nozzle was over eighteen inches long with a bulb and flanged base. With a start Klein realized the flange was to stop the nozzle going even deeper. "His fuck-hole's so clean you could eat outta it." Breck roared a laugh, but Klein didn't see the joke.

"Right... Got it." The Collie worked one finger over the dog's presented rear end. The flesh of the dog's anus was velvety soft, smooth. When Klein's finger passed over the centre of the dog's pucker the flesh clenched briefly, then relaxed. The anthro slipped a finger through the puckered ring. The soft, velvety, smoothness was internal as well. A second finger joined the first inside the dog's rectum. Then a third. Klein moved his hand in a careful massaging motion to keep the dog's sphincter relaxed.

"Give 'im some pats 'n' tell 'im he's a good boy," Breck instructed from behind.

"What? Oh, right," Klein jumped at the man's voice. He'd been so focussed on watching his fingers sinking into the dog he'd all but forgotten there was another person in the barn. He patted the dog's rump, "Good boy, Nero. Uh, good dog." The muscles around the Great Dane's tail flexed as though he were trying to wag. Klein's fourth finger slipped into the relaxed hole and his hand sank to the knuckles. Warm velvet clenched around his fingers. Klein massaged his fingers around, back and forth. He withdrew his fingers almost completely, then pushed them in. Klein marvelled at the way the dog's ring of flesh could contract, then expand around his fingers. The anthro Colliw savoured the feel of hot silk around his fingers.

"Gettin' him nice 'n' loose." The farmer watched Klein's progress over his shoulder. "Time to relax with a beer for a bit." He handed Klein a bottle.

The Collie realized how jumpy and anxious he was. Perhaps a beer would ease his nervousness. He took the proffered bottle, but didn't raise it to his lips. "Ugh, it's not chilled. I don't like warm beer,"

"Nero prefers it that way. An' don't fret - you'll enjoy it too" Breck took a swig from his own bottle.

"What? Your dog drinks beer?" Klein looked confused at the bottle in his hand.

"Nope. He takes it up the butt. Gets 'im drunk real quick, and makes 'im all relaxed 'n' loose," said Breck. Klein stared in disbelief but the man continued, "Rub some of that lube around the top of the bottle and press it into his butt. Don't push it in too far - you don't wanna lose the whole bottle."

Klein barked a nervous laugh, but then thought it may actually be possible to lose the bottle in the dog's rectum. He rubbed lubricating gel around the open top of the beer bottle. The farmer nodded encouragement when Klein glanced back. Gently Klein pressed the top of the bottle to the centre of the dog's pucker. The dog relaxed and the neck of the beer bottle slipped easily inside.

"That's it. Now, lift it a bit, and shake the bottle side-to-side real good," said Breck.

Foaming beer forced the amber liquid inside the dog. Klein was amazed how it worked. He pulled the empty bottle out and the Dane's pucker closed, retaining the beer. He handed the empty bottle to Breck.

"Great job. Didn't spill a drop. Here's another. Yep, that's also for Nero's butt." Breck passed a second warm beer to the Collie.

As before, Klein lubed the top of the bottle, pushed the neck into the dog and shook. Fizzing beer rushed into the Great Dane a second time. Klein was in a daze. This was so strange, so perverse. And yet the Collie's cock was aching hard in his pants.

"Great job. Give 'im a few minutes so he can enjoy his beer. Gotta get 'im a little drunk so he relaxes proper," said Breck, "An' you should prolly get naked 'cause you don't wanna ruin your city-boy clothes." Breck stared pointedly at the crotch of the Collie's pants. A noticeable dark stain of the Collies arousal was forming. "You can hang your things on the hooks over there," he nodded to the corner, "And don't be shy. I seen plenty of cocks in my time." He winked.

"Of course. Of course." Klein felt awkward and embarrassed as he undressed. But this could be his only chance to play around sexually with a classic Great Dane and he was willing do anything to prolong his time with the dog. God, he'd never been so turned on in his life. His kinkiest dreams were being realized here, today. His underwear was so damp with his excitement he practically had to peel the wet material away.

When Klein returned to the dog the farmer also had disrobed, tossing the tattered overalls in a heap near the door. Oddly, the man had kept his work boots and hat on. The farmer's body was hairy, muscled from hard labour but softened by age. Klein surreptitiously glanced at the human's groin; the man's cock was thick, but flaccid over his low-hanging balls. Ugh, circumcised. Humans have barely any sheath protecting their cock and they mutilate it.

Breck was openly staring at the Collie, "Lookit that! You got a sheath just like my Nero! I aint never seen one o' you dog-boys naked before. Such a slight, pretty thing. Wonder if you'd feel as good wrapped around my cock."

Klein self-consciously tried to hide his groin, tucking his tail down, "Look, sorry, I don't bottom. I hope you weren't expecting..."

"Naw. Hell, boy, the day is still early. We got a ton of things to play with yet," he gestured toward the bound Great Dane who was patiently waiting. The dog's head swayed slightly and his tongue lolled from his dopey maw. It seemed the alcohol was having an effect on the beast. "Before we get serious you gotta give my boy a big ol' kiss right on his pucker. Show him you love 'im."

Klein stared at the pink flesh under the dog's tail. Kiss that? He should be disgusted but the Collie's penis twitched at the idea. He knelt behind the Great Dane. He tentatively sniffed the dog's butt. All he could smell was lube with a hint of beer. He glanced back at Breck for confirmation. The man was nodding, encouraging him. Klein placed his hands on the two muscled thighs of the beast and tilted his head slightly. One part of his mind was shouting to stop, dogs are dirty, you don't want your mouth near a dog's butt-hole. But another part of his mind was so incredibly turned on by the idea. His cock was hard as steel, stretching his sheath. He closed his eyes, clamped his lips over the dog's pucker and kissed.

Warm beer flooded into the Collie's mouth. "Drink it, boy! Don't you waste it!" Breck commanded from behind. Startled, Klein gulped at the flow. He could have pulled away, could have prevented himself from swallowing. But instead he pressed his face harder to the dog. Tepid beer flowed and he greedily sucked it down. Somehow it was the best beer he'd had in his life. The farmer was right, Klein did enjoy the beer warmed. When the flow subsided Klein pushed his tongue through the dog's pucker to encourage the last dribbles. This was kinkier than any fantasy Klein had ever imagined. He was rimming a Great Dane dog and drinking beer from its arsehole. Pre-semen squirted from Klein's cock onto the concrete floor.

Eventually he pulled his face away. "My god. That was... that was incredible." Klein wiped the back of his hand over his muzzle.

"Heh. Reckon you showed him you love 'im." Breck clapped his weathered hand on the kneeling Collie's shoulder. "Good job. Now, he should be nice 'n' relaxed for the next bit," he handed Klein a plastic pot. The label said 'Vegetable shortening'. "You gotta lube him up real good. Gotta pack this stuff into his fuck-hole and all over your hand. Use lots, no such thing as too much lube. You do it right and you'll get your whole hand in his butt."

Klein groaned at the man's words. Fisting a dog's butt was a fantasy he'd played in his mind a thousand times. And always he'd pummelled his cock to rapid orgasm, imagining the heat of a dog around his hand. Now a man was inviting him to fulfil his ultimate perverse desires. Before him was a bound dog, waiting for his fist.

Klein's hands shook as he took the proffered tub. Inside the container was white, thick grease. He used his fingers to scoop handfuls of the gunk, smearing it around the dog's butthole. He used three fingers, and then four to push gobs of the grease through the dog's relaxed pucker. Before long he'd used half the tub of grease, most of it pushed inside the dog and the remainder spread over his own hands.

The lubed pucker of the dog easily took the Collie's four fingers to the knuckle. Klein pulled his thumb against his bunched fingers, trying to make his hand as small a diameter as possible. Carefully twisting his hand to help the ring of muscles slip over his knuckles he pushed forward with increasing pressure. Every so often Klein pulled his fingers back, applied a little more lube and pressed forward again. The flesh of the dog's pucker was stretched until it was shiny. Klein didn't want to hurt the dog, but at the same time he was desperate to achieve his ultimate fantasy.

"Slow and careful is the way. Don't you hurt my boy." Klein jumped at Breck's words. The Collie had been lost in the perversity of the moment, mind focussed entirely on the Dane's butt in front of his face. He took a deep breath and tried to calm his pounding heart. He was getting slightly buzzed from the beer, Oh god I drank beer from a dog's arsehole!

But slow and careful allowed the Great Dane to accommodate the larger diameter of Klein's hand. The taut flesh slid overtop the knuckle of his thumb and Klein's hand slid wrist-deep into the dog. The Great Dane shuddered, relieved at the comparatively thinner diameter of Klein's wrist. Klein realized the dog was squirting streams of pre-semen onto the concrete. The Great Dane's knot was swollen in his sheath, stretching the hairless skin around the bulge.

Klein held there, gasping and groaning, staring at where his wrist vanished inside the dog. He could feel velvet walls clamping around his whole hand. He dared not move, hardly dared to breathe in case he juddered to orgasm. He was here, now, with his fist buried inside a dog, his most perverse fantasies realized. Unconsciously he was drooling and panting like the dog around his fist.

"You kin go deeper if you like," Breck encouraged the gasping Collie.

Deeper. Push more of his arm inside. Klein whined and the world greyed for a moment filled with the sound of his heart pounding in his ears. He panted, fearing he'd pass out. Deeper...

With his free hand shaking, Klein slathered more of the thick paste over his forearm and around the dog's stretched pucker. Slowly and carefully Klein pushed his hand forward. Velvet flesh slid up his forearm as his hand sank into the hot tunnel. His fingers met a constriction, but he worked them around and his knuckles passed through. Remnants of beer sloshed around his fingers. He could feel the Great Dane's pulse around his arm, or perhaps it was his own thumping heartbeat.

Every so often the dog's muscles would clench around Klein as the Great Dane squirted jets of pre-semen onto the floor. Klein was leaking a constant stream of his own arousal. He was panting, his breath making a quiet whining sound. This was beyond his fantasy, far more perverse and erotic than he'd been able to conjure in his mind. And here he was, almost elbow-deep in the Great Dane's butthole. It seemed the capacity of the dog was endless, a long tube of accommodating flesh. Would the whole Collie be swallowed up, lost in a kinky trance made reality?

"Don't go deeper than that. Getting' risky for his health." A sudden voice from behind him. Klein startled again, brought judderingly back to full awareness. With a shock Klein realized the Great Dane's sphincter was now a tight band around the Collie's elbow. At his fingers Klein felt the dog's heartbeat, strong and dangerously close. The dog was panting and Klein was panting - both the canines drooling puddles of saliva and pre-semen to the floor. Klein was at once intensely focussed on the sensations of the dog's life along his arm, and at the same time the world was swimming, Klein was floating lost in the perverseness of the moment.

"Pull back slow and gentle, same as you went in. Give 'im time to adjust." That deep voice from somewhere in the universe behind Klein, like the waking world seeping into his dreams. Here, in some magical fantasy land Klein was elbow deep in warm flesh, living a reality more perverse and erotic than he had ever imagined. He was the merest breath away from spontaneously orgasming. He drew a juddering breath and began to ease backward.

The ring of Nero's sphincter pulled outward slightly as Klein's arm withdrew. With care, and aided by generous quantities of grease, the Collie's arm pulled back. When he'd withdraw about half way that disembodied voice behind spoke again, "Make a fist before you pull out. Nero likes a bit of a challenge."

"Oh god... oh god..." Klein did as the man suggested, curling his fingers down and nestling them over his thumb inside the dog. The velvet flesh yielded to accommodate the change in geometry of Klein's hand into a fist. He pulled back, feeling a little more resistance of the tunnel around his clenched fist. The dog was panting and shuddering and Klein was too. With the dog's sphincter now clamped around his wrist there was a moment of easing of stress for the two. But Klein pulled his fist backward, through the tightest constriction. The ring of the dog's sphincter was taut, and his anus pulled obscenely outward. Klein whined, panting, watching the flesh straining against his fist. Then all at once his fist popped free. The Great Dane yiped, but at the same time a long jet of pre-semen splashed to the concrete.

Klein's cock jumped and bobbed - for a moment he was sure he was cumming, mentally overstimulated from the barrage of sexual imagery. He gasped and panted, barely getting himself under control. He held the Great Dane's thighs, steadying himself in case he passed out. The world swirled and greyed.

Chapter 2: Otis

"You need a moment, lad?" That voice, jarring Klein back to reality, sounding so normal. "Looks like you had yerself a religious experience." Breck was grinning. "So, you think you got 'im loose enough now?"

Colour seeped back into the world - Klein regained control of his breathing. He glanced at the orifice where his whole arm had recently been embedded. The hole gaped - Klein could see inches into the dog. The ring of muscle had been stretched, but not torn or damaged. It could be a while before the Great Dane would be able to clench his sphincter again. "Can I... can I fuck him?" Klein's voice shook and sounded like he was begging.

"Course you can!" said Breck. Klein gathered himself to his feet behind the dog. His cock ached and it would be painful to get his knot out of his sheath. But Klein was desperate to fuck the Great Dane.

"Uh, not yet. You don't get to go first." Breck put his arm in front of the Collie.

"Oh! Gods, of course. He's your dog, of course you go first." Klein stepped back, abashed. He was also slightly disappointed, he desperately wanted to fuck the dog then and there. But the thought of fucking the Dane after the man was less appealing.

"Nah, not me. Otis gets first dibs."

Klein was confused, looking around. "There's someone else here?"

The man walked out of the barn, leaving a confused Klein staring at the Great Dane bound into the steel frame. He wondered if he should fuck the dog while the man was out - surely Breck would never notice. And Klein wouldn't last long - he was almost cumming just from thinking about that silken tunnel. But he could hold out a little longer. Going sloppy seconds after another man had fucked the Dane wouldn't be so bad.

A few moments later Brent returned to the barn leading a horse. "Meet Otis. He and Nero are the best of buddies." In confirmation Nero wuffed a greeting, and Otis raised and lowered his head, nickering in reply.

"You're not serious! You're not suggesting you're going to let a stallion fuck your dog?" Klein surely must have misunderstood the situation. It seemed impossible to consider. The horse was huge compared to the dog. Otis was obviously a stallion - his cock already hung from his belly, swinging beneath. It was a mottled white and black shaft of flesh every bit as thick as Klein's forearm and quite a bit longer. Behind that mighty rod swung a black scrotum with two balls as large as baseballs. The horse was a gorgeous beast, black as ebony with the same sculpted musculature of the Great Dane. The black coat was well-groomed, shining in the diffused light of the barn.

"Heh. Yup, sure he can," Breck led the horse toward the restrained dog, "Now, lower that bar and lock it into the frame."

As though watching through someone else's eyes, Klein saw his own hands lower a thick steel pipe behind and above the Dane's rear. He watched himself lock the bar into place with a steel pin. This isn't real, this isn't happening. His mind seemed to protest, but his shaking hands and body worked as though he wasn't controlling them. It was all too surreal - the randy horse stomping behind the bound Great Dane, led by a naked farmer.

Otis lowered his head and sniffed at the rear of Nero. The dog whined happily, the muscles of his tail straining to wag against the bonds. Klein watched as though from a distance as the horse lifted his head and drew back his lips. Flehmen response... The term rose unbidden in Klein's mind. Thick meat under the horse slapped once, twice against its belly. Now Breck was struggling to keep the randy horse still.

"When he mounts, you gotta guide his cock. He doesn't always hit the mark. Don't wanna waste his cum against Nero's balls. Watch your feet - his hooves'll crush your bones," Breck led the prancing horse closer to the frame. With a short hop the horse mounted the frame, draping its front legs either side of the restrained Great Dane. Its hard cock jabbed forward a few times, prodding at the hips of the dog. Klein watched his own hand reach forward. Otis' shaft was too thick for Klein's fingers to wrap around, but the Collie was able to guide its thrusting. The rear hooves of the horse pranced and stomped, getting a better position behind the frame.

Klein's world had narrowed to focus on aligning the thrust of the horse's cock to the gaping pucker of the Dane. But it surely wasn't real, this was happening to someone else in some twisted movie. Horses don't fuck dogs. Therefore Klein didn't have a hand feeling the power behind the horse's thrusting. The blunt head of the horse's cock punched through the Great Dane's sphincter. The horse adjusted his footing and slammed his hips forward. Fully eighteen inches of horse cock pummelled into the dog. Nero yelped at the sudden intrusion. This wasn't the careful penetration Klein had tried to use with his arm. The horse punched most of his cock with one swift motion into the bowels of the dog. But the horse's thighs crashed into the sturdy bar behind the dog. The entire frame shook as the horse was prevented from sinking the entire length of his cock into the dog. Klein understood now why the heavy steel and restraints were necessary. Without limiting the instinctive thrusting of the horse, Nero could be harmed or even killed from the powerful fucking by the stallion.

Three more times the horse pulled its hips back, then slammed into the frame. The entire barn shook. Otis' cock was swallowed by the anus of the Great Dane. Each time the horse's thighs crashed into the steel bar the dog groaned. Otis squealed in his lust and release inside the dog.

The world of noise and violence subsided as Otis lay on the frame overtop the dog. The scrotum of the horse pulled upward and its cock thickened and pulsed. Horse semen poured in a torrent into the bound dog. Klein's face was still near the rear of the dog. In disbelief he watched the taut ring of the dog's sphincter stretched even wider around the pulses of stallion cock.

Beneath the Great Dane, synchronized to the pulses in its butt, sustained jets of pre-semen wetted the floor. Nero's head was lowered, drool ran freely from his jowls. He panted long, whining gasps while his guts were filled with stallion cum.

And then it was over. Horses only cum for ten seconds or so but it had seemed much longer to Klein. Every surreal detail, every moment of yielding flesh and the thick pole fucking the dog was burned into Klein's mind. He still couldn't believe it had been real, that it had happened right here. And he'd assisted.

Otis pulled back. The wide head of his cock dragged out Nero's stretched orifice. When the flare popped free a gout of thick cum followed. Breck allowed the stallion to sniff at his handiwork. The horse's cock dribbled white goo. As Breck led the horse away already its mottled cock was retreating to its black sheath.

Klein was struggling to regain his breath. He'd just watched a stallion fuck a dog. Ropes of white horse semen oozed from the open pucker of the dog. It cant have been real, but there was the evidence in rivulets of cum over the dog's scrotum and thighs. Klein dropped to his knees, unsure if he was going to pass out, or throw up... or orgasm.

Chapter 3: Klein

"You kin fuck 'im now if you want." That deep voice, sure, confident, anchored in the earth. Klein grasped at the sound of the returning man, pulled his awareness back.

The dog was still restrained, horse semen still oozed from the gaping hole. Fuck him? After the horse? What would that hole full of horse cum feel like around his cock? Could he really do it? And just like that, Klein realized he was desperately horny again. Fuck, yeah of course he wanted to fuck the Great Dane. Christ, after fisting the dog, watching it fucked by a stallion, Klein thought he might just explode if he couldn't fuck the dog!

Klein struggled to his feet. The world swirled, but it was probably the effect of the beer (dog butt beer). Nero's butt-hole was exactly the same height as Klein's penis. The Great Dane was a tall dog - Klein wouldn't even need to crouch to fuck him. The Collie's cock was already hardening. He pulled his sheath back, and yelped when his growing knot popped free of stretched opening of his sheath.

"Now here's a thing... Since Otis fucked 'im first, he's so loose you can get your balls as well as your cock into his fuck-hole," said Breck as he raised the sturdy bar of the frame behind the dog, "When you put your cock in 'im, just poke one, then the other of your balls into him as well. You aint fucked until you've tried a balls-inside fuck."

Klein glanced at the man. The farmer's hard cock was standing straight out from his body. But was he teasing Klein? Was it possible to get balls as well as his cock in the Dane's hole? Klein pressed forward. Nero's gaping sphincter swallowed Klein's cock and growing knot with little resistance. Experimentally Klein reached below his own scrotum and pressed one of his testicles to the hole. His ball slipped into the gap. The second testicle followed. Wet silk engulfed Klein's entire cock and balls. The sensation was incredible. Horse semen provided ample lubricant and flowed in a river around Klein's genitals. Klein felt as though his whole body was floating in a sea of warmth. He tilted his head backward and closed his eyes to savour the wet heat around his entire groin.

"I kin tighten 'im up a bit for ya so it feels even better," said that disembodied voice. Breck knelt beside Nero and reached under his belly. The dog's knot had deflated after the profound fucking from Otis. Breck rubbed Nero's sheath back and forth. The dog juddered in the frame, attempting to hunch forward with his hips. With consummate skill honed by years of practice the man stroked the Great Dane's cock until the dog's knot started growing. Breck peeled the dog's sheath back so the knot grew, exposed to the air. Then he clasped his fingers firmly behind the bulge, applying pressure to stimulate the dog the way a bitch's vulva would hold him.

Klein felt the Great Dane's muscles weakly clenching around the base of the Collie's cock and balls, sucking him deeper. He looked down to see Breck handling the Dane's knot - a red bulge as large as the man's fist. Walls of silk undulated around Klein's cock, making his own knot grow inside the Dane. Without thrusting, just having his cock as well as his balls massaged by the clenching Dane, Klein felt himself building toward orgasm.

The rhythmic contraction of the Great Dane's sphincter became stronger as the fluid squirting onto the floor took on a milky consistency. Nero was cumming properly now, spraying his sperm-rich release. Breck lowered his head and took the Dane's cock into his mouth, drinking down the dog's ejaculate.

Stimulation overwhelmed Klein. Thick horse-semen surged around his cock and balls, trapped inside the Dane. Watching the human sucking on the Great Dane's impressive meat, while feeling the dog's tunnel squeezing his knot brought Klein to a powerful orgasm. The ring of sphincter muscles had recovered strength and gripped tightly onto Klein's knot. He cried out, gripping the dog's thighs with his fists. His body spasmed with the shock of orgasm. White-hot ecstasy flowed from his abdomen, jetting from his cock into the beast. Klein had been held at the edge of cumming since he arrived, immersed in his kinkiest of fantasies become real. Finally he was allowed his release. Never had the Collie cum so hard, shooting rope after rope of semen into the dog. He whined, gasped, panted and clenched his muscles to pour every drop of his essence into the wet depths. Nero's flesh answered by squeezing firmly around the Collies cock and balls.

Breck expertly milked the Great Dane's cock, bringing his beast to its own powerful completion. The man drank the rich fluid from his dog.

As a hybrid of human and canine, Klein's orgasms were sustained, drawn out for a full ten minutes. All that while Klein shuddered and jerked, pouring semen in jets into the Great Dane. Bliss flowed through Klein in great waves. The Collie's eyes leaked tears, unnoticed as he savoured the warm silken tunnel massaging his knot and sealed around his balls.

At last the peak of his pleasure waned. A few more desultory squirts, and Klein's knot began to deflate. He opened his eyes, savouring the afterglow of departing orgasm. But he couldn't pull his cock back. The Great Dane, still in the throes of his own orgasm, was clenched tightly around the base of Klein's cock and balls. When the Collie experimentally tried to extract his scrotum, the gripping ring hurt his balls.

"Ow. Hey, um, I'm kinda stuck here," said Klein. With his arousal departed Klein's head was buzzing from the beer. He felt awkward standing behind the Great Dane with his genitals clamped inside the beast.

"Yep. Nero cums for about a half hour," Breck was speaking from under the dog, its cock distorting his words, "Beer makes him randy. So relax and get used to it. You're not going anywhere until my boy is done."

Klein shifted uncomfortably, "I... uh... I really gotta pee though." Now that he was no longer so horny the beer he'd drunk made itself known. He tried pulling his hips back but the pain in his captured balls kept him stuck to the Dane.

"Just let loose there. Nero don't mind," said Breck's distorted voice from beneath the Dane.

"Ugh, no!" Klein was horrified at the thought, "Just... help me outta here, please?" Urgency was building in Klein's bladder. The Dane's sphincter was sealed, locking the struggling Klein inside. The man ignored his pleas. In an effort to contain his desperation Klein whined, cramping his abdomen. He tried to think of anything but needing to pee, but visions of streams and waterfalls somehow intruded his thoughts.

"Oh fuck fuck fuck... Gaahh!" Klein lost control of the irresistible pressure in his bladder. With a couple of hesitant spurts, the dam holding back Klein's urine broke. Suddenly he was pissing, letting loose inside the Great Dane's butt. He tried, but failed, to stem the flow. Once he'd begun there was no holding back the beer he'd drunk earlier. Tears of relief ran down his cheeks as the cramping of his abdomen abated. It seemed he pissed for an hour. Simultaneously disgusted and relieved he felt hot liquid sloshing around his balls - his balls which were trapped inside a Great Dane he'd earlier fisted, then watched a stallion fuck. A few hours earlier this would have been unthinkable, impossible to believe or imagine. And now his piss was mixing with horse semen inside a dog. The perversion contrasted with the overwhelming relief of his bladder.

In response Nero fired a long volley of squirts into the mouth of his owner beneath. The resulting clenching made hot fluid slosh around Klein's cock. Unbelievably he realized he was getting hard again, still stuck inside the Great Dane. The stimulation was undeniable and unrelenting. And the whole situation was far kinkier than any fantasy Klein had ever imagined. The Great Dane's tunnel flexed around Klein, rippling along his hardening cock. Muscles squeezed his flesh, milking his groin. Beneath the dog he could hear Breck chuckling as he alternated suckling and licking the Great Dane's cock, coaxing the dog to clench harder.

Klein's knot expanded, and he was again tied with the dog. He tilted his head back, eyes closed to savour the incredible sensations along his cock. A tension was building in his abdomen again. Without having pulled out he was getting aroused and hard again.

With a start, Klein felt something press under his tail. He glanced around in surprise to discover the naked man was behind him. Breck's penis was hard and he pressed it against the Collie's pucker. Klein protested, "Oh, look sorry I really don't..."

"Yeah, you do," Breck interrupted, "And you'll like it, too." He'd scooped a handful of the thick horse semen which had oozed down the Great Dane's thighs and slathered along his cock. He pushed the slicked head of his cock against Klein's resisting hole. Klein wasn't sure he wanted this - to be fucked by this coarse human. But the Collie was held captive by the Great Dane's flesh. Nero's unattended cock bounced and pulsed beneath the belly of the dog, giant knot keeping his cock exposed. The dog would still be cumming for a long while yet.

Klein drew a sharp breath. There was a moment of burning pain when the circumcised head of the man's cock breached his sphincter. But the pain quickly faded as the man paused to let Klein adjust. Another virginity lost, I suppose, though Klein. He'd never been fucked by anyone, man or hybrid. Or dog. It actually felt kinda nice - the man's cock pressed the Collie's prostate gland in just the right way. Anal stimulation combined with the wet clenching over his balls made the Collie shiver.

Klein was trapped between the beast and the man, vacillating between two worlds. His animal nature basked in the perverted sex, warring with his human limits. In front and around him was the dog, behind him and inside him was the man, and Klein was part of both. This was complete fulfilment, this was where a hybrid like him should be.

"Oh god... oh god I'm going to cum again!" Klein bunched his fists into the rump of the Great Dane. Breck's thrusting into the Collie's butt pushed him against the dog providing the perfect rhythmic stimulation front and back. As he juddered into his second powerful orgasm he felt the man's cock spitting. Breck was cumming into the Collie's bowels at the same time. Hybrid and human roared through the union of their pleasure. Klein thought he was squeezing his life essence through his cock into the Great Dane. Or perhaps the throbbing of the man's penis inside him merely used him as a conduit and it was Breck's semen flowing into Nero. Klein's rational mind was lost in the waves of bliss.

Unlike the Collie, the man was soon done. Through the haze of his prolonged orgasm Klein felt Breck softening inside him and then his cock slipped free. Somehow Klein felt empty, a moment of loss at the retreating cock. It has been so right, so comforting, so goddamned good having the man inside him. And that comfort had withdrawn.

"That's all I got, lad. But you take your time. I know you dog boys get to cum longer and it makes us reglar folk jealous as all hell. Hehe." Breck clapped his hand on the Collies shoulder again, then retreated to sit on a bench by the wall. He idly stroked his softening cock while he watched his dog being fucked by the hybrid.

Some long while later conscious thought returned to Klein. The echoes of orgasm died down and his knot deflated. He could feel the sphincter of the Dane had relaxed somewhat as well. Nero, too, was coming down from his blissful peak. The rump of the beast pushed back slightly as its back bowed. Klein realized the dog was withdrawing its exposed cock back into the safety of its sheath. The dog was done, and its sphincter suddenly loosened its hold on Klein's scrotum and softening cock.

"You all finished? 'kay, give me a sec," Breck stood and ambled over to the two canines. His cock was half-hard, stroked back to semi-arousal, "When you pull out, step aside so I can plug his hole."

Klein manoeuvred himself to allow Breck access to the dog's pucker the moment he pulled out. The Collie was actually impressed at the older man's stamina "Man, I'm done. You gonna go a second time?" Klein's own cock softened and retreated into his sheath. His balls were wet with a mix of his semen, piss, and he could smell a hint of beer odour.

"Hell nah, I just gotta take a piss as well," said Breck. He was concentrating with his cock pressed into the Great Dane. Then he seemed to relax as he urinated inside the dog. Klein should have been shocked, or repulsed, but of course it was just how this day was going. Of course the human would piss inside the same dog Klein has pissed into earlier.

"Now grab that big plug from near the hoses," said Breck. Klein looked around the hoses and fittings and grabbed a black butt-toy. It was a thick butt-plug around two inches wide near the base.

"No, the big one!" Breck gestured while Klein moved the hoses aside. "Yeah, that's it!"

Klein hefted the butt-plug. It was over three inches wide at its thickest - wider even than his fist. "You sure? This one?"

"Yep, that's it. That's the only toy that'll stay in now. Lube it up real good with the grease and hand it to me," Breck's cock was still inside the dog, but fluid was starting to seep and run down the man's scrotum. "Gotta keep all that mess inside 'im for a bit."

Surely the black rubber cone was too big. Klein studied the toy dubiously, but slathered the lubricant liberally over the hard surface, then passed it to Breck. Deftly the man replaced his cock with the tip of the toy in the Dane's hole. A few dribbles of goo leaked before the tip of the toy was inserted far enough to form a seal. Then the man firmly pushed the toy inward. Aided by the grease the toy slid easily almost to the widest point. Breck used the heel of his palm against the flanged base of the toy for more leverage and pushed hard. Klein flinched and Nero yelped again as his sphincter expanded to accommodate the giant diameter of the plug. Then it was in - the Dane's sphincter closed around the thin neck of the toy with the flanged base pressed against his pucker. The mess was sealed.

"Now he can rest a bit. My boy's all fucked out," said Breck, affectionately patting the rump of the Great Dane. Nero slumped with exhaustion - only the straps and supports of the frame kept the dog upright.

Breck gestured for Klein to follow him to the bench. "Sit with me for a bit. Did you enjoy your day?"

A mixture of his own and a horse's semen dried to a flaky crust on Klein's balls. Fur down his thighs were matted with lubricant and goo. His arm to the elbow was still slick with grease and a vague scent of beer. Did I enjoy my day? Visions of his arm vanishing into the dog, of a powerful horse cock punching in shortly after, memories of warm clenching satin flesh, of being held while he pissed into Nero and then cumming again while the Collie lost his virginity to a man fucking him... Did I enjoy my day?

"Holy shit... I... That was incredible. Amazing. Beyond even my most intense fantasies," Klein sat next to the naked human. He was no longer self-conscious - there wasn't anything the man hadn't already seen or done or watched Klein do that could compare to just sitting naked, "I've never cum so hard in my life. I don't have words to express how grateful I am that you let me play with your boy. This is a day I'm never going to forget, and you can be damned sure I'm going to jerk off a thousand times remembering."

"Heh. Guess that's a 'yes' then," Breck clapped the Collie on the shoulder, "An' my sweet boy loved you too. You made him feel real good and that means a lot," he nodded toward the Great Dane slumped in the restraints, "Now, about time we let Nero free."

Klein leapt to his feet, "Of course, I'll let Nero out of the bindings," He approached the frame with the restrained dog.

"Got one last thing you can do before you let 'im loose," said Breck, "You take that plug outta his fuck-hole and you give his pucker a big kiss to show him you really love him."

Klein was mortified, staring at the black circle of rubber, "What? No! Eww, that's gross. There's cum and piss... gods you pissed in him too..." What else was in there? Beer, horse cum, his own cum - two loads of his cum - he'd pissed in and then the man had pissed afterward. With a lurch his world had shifted under his feet again.

From a thousand miles away he could hear the man speaking, "An' if you don't spill a drop, the next time you visit you kin be strapped in the frame."

Klein's awareness contracted to a single focus, staring at the black rubber. A crust of drying horse semen crackled down the Great Dane's thighs. It was too much, too far outside the Collie's limits. He couldn't do it.

So why was his cock twitching to hardness? How did he find himself kneeling behind the Great Dane, one hand grasping the base of the plug? Why was his mouth watering?

-

The end. Probably.

-

Author's notes: Whew! That was quite the journey to write. I enjoyed taking the Collie ever further into kinkiness, keeping him unbalanced trying to cope with the escalating perverseness. Thank you for making it this far (and bothering to read these notes. For all I know I'm typing to an empty room and cum-covered monitor).

I've been toying with the idea of writing this exact same story again, but from the perspective of Nero the Great Dane. It might be fun to get Nero's take on the activities of the day.